1284096domain: NAppears in sequencesTheta series of 12-dimensional unimodular lattice {D_12}^{+}.at n=11A004533Expansion of ((1-x)/(1-2*x))^4.at n=14A062109Triangular array read by rows. T(n,k) is the number of square lattice walks that start and end at the origin after 2n steps having k primitive loops; n>=1, 1<=k<=n.at n=24A227997